论文标题
在Proton-Proton碰撞中腐烂到底部的Quark-Antiquark对的高度增强的Higgs Bosons $ \ sqrt {s} = $ 13 TEV
Inclusive search for highly boosted Higgs bosons decaying to bottom quark-antiquark pairs in proton-proton collisions at $\sqrt{s} =$ 13 TeV
论文作者
论文摘要
搜索具有横向动量（$ p_ \ m atrm {t} $）的标准模型玻色子（h），大于450 GEV，并使用Proton-Proton collot colliment coltiment cont proton-protiment coltiments concms cont cms s s s s s s s s s lh = $ 13 TEV。数据样本对应于137 fb $^{ - 1} $的集成光度。搜索在Higgs玻色子生产模式下具有包容性。高度洛伦兹促进的希格斯玻色子腐烂到$ \ mathrm {b \ bar {b}} $被重建为单个大型摩擦式喷气机，并使用JET子结构和基于深层神经网络的专用B标记技术鉴定。该方法用z $ \ to $ $ \ mathrm {b \ bar {b}} $衰减验证。对于Higgs玻色子质量为125 GEV，假设未观察到Higgs Boson产生的局部意义为2.5标准偏差（$σ$），那么在背景上过多的事件，而期望值为0.7。相应的信号强度和相对于标准模型期望的局部意义为$μ_\ MATHRM {h} $ = $ = $ 3.7 $ \ pm $ \ pm $ 1.2（stat）$^{+0.8} _ { - 0.7} $（syst）$（syst）$^{+0.8} $^{+0.8} _ { - 0.5} _ { - 0.5} $（theo）$（theo）和1.9 $ =。此外，假设其他生产模式以预期的速率出现，则提出了一个展开的差分横截面作为Higgs Boson $ P_ \ Mathrm {T} $的函数。
A search for standard model Higgs bosons (H) produced with transverse momentum ($p_\mathrm{T}$) greater than 450 GeV and decaying to bottom quark-antiquark pairs ($\mathrm{b\bar{b}}$) is performed using proton-proton collision data collected by the CMS experiment at the LHC at $\sqrt{s} =$ 13 TeV. The data sample corresponds to an integrated luminosity of 137 fb$^{-1}$. The search is inclusive in the Higgs boson production mode. Highly Lorentz-boosted Higgs bosons decaying to $\mathrm{b\bar{b}}$ are reconstructed as single large-radius jets, and are identified using jet substructure and a dedicated b tagging technique based on a deep neural network. The method is validated with Z $\to$ $\mathrm{b\bar{b}}$ decays. For a Higgs boson mass of 125 GeV, an excess of events above the background assuming no Higgs boson production is observed with a local significance of 2.5 standard deviations ($σ$), while the expectation is 0.7. The corresponding signal strength and local significance with respect to the standard model expectation are $μ_\mathrm{H}$ $=$ 3.7 $\pm$ 1.2 (stat) $^{+0.8}_{-0.7}$ (syst) $^{+0.8}_{-0.5}$ (theo) and 1.9 $σ$. Additionally, an unfolded differential cross section as a function of Higgs boson $p_\mathrm{T}$ for the gluon fusion production mode is presented, assuming the other production modes occur at the expected rates.
